Paint spraying wastewater treatment system and treatment method thereof

Abstract

The invention discloses a paint spraying wastewater treatment system and a working method. The paint spraying wastewater treatment system is suitable for preliminary treatment of paint spraying wastewater in a sedimentation tank, the paint spraying wastewater treatment system comprises: a scraping device arranged in the sedimentation tank, a stirring device arranged in the sedimentation tank, anda paint slag adsorption device arranged in the sedimentation tank; the sedimentation tank is communicated with a water inlet pipe through a control valve; the control valve is communicated with a controller. The paint slag adsorption device moves up and down along with the water level through a floating body and can be continuously used in the water circulation process; the paint slag adsorption device is used for adsorbing and removing dross on the water surface through a floating negative pressure adsorption principle, so that the dross which cannot be fished by a fishing net in a traditional fishing net is avoided; dross condensed at the edge of the sedimentation tank can be cleaned through a scraping plate of the scraping device, so that the efficiency of the paint slag adsorption device is improved, and repeated procedures of later cleaning work of the sedimentation tank are reduced.

Description

technical field [0001] The invention belongs to the field of waste water treatment, in particular to a paint spray waste water treatment system and a treatment method thereof. Background technique [0002] For the initial purification of paint wastewater, first add paint suspending agent to the sedimentation tank, form condensate floating on the water surface in the paint wastewater, and then collect them and continue to complete the treatment of paint wastewater through circular purification; the paint suspending agent will The paint molecules dissolve, and remove the sticking and emulsifying properties. The paint slag decomposes after emulsification and floats up. During the salvage process, a large amount of paint slag decomposition adheres to the edge of the sedimentation tank, which is not conducive to the qualified rate of salvage. The traditional salvage method The paint slag is decomposed to form foamy flocs in the water, and the paint slag that is smaller than the m...

AI Technical Summary

Problems solved by technology

[0002] For the initial purification of paint wastewater, first add paint suspending agent to the sedimentation tank, form condensate floating on the water surface in the paint wastewater, and then collect it and continue to complete the treatment of paint wastewater through circular purification; the paint suspending agent will The paint molecules dissolve, and remove the sticking and emulsifying properties. The paint slag decomposition product emulsifies and floats up. During the salvage process, a large amount of paint slag decomposition product adheres to the edge of the sedimentation tank, which is not conducive to the qualified rate of salvage. The traditional salvage method The paint slag is decomposed to form foamy flocs in the water, and the paint slag that is smaller than the mesh size is easily missed by the salvage net, which will increase the burden on the cycle and increase the amount of circulating water, and even cause the water pump in the sedimentation tank to fail. jam

Secondly, after the water in the decomposed paint slag evaporates, it is easy to condense into coke-type adherents on the surface of the sedimentation tank, which is not convenient for later cleaning

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